CALCULATION OF ICEBERG IMPACT FORCES

Development of petroleum resources located on the Grand Banks means that icebergs must be considered. Platforms must either be capable of withstanding iceberg impact forces or withdrawing from the path of the drifting iceberg. For a large, permanent production platform like the one proposed for Hibernia, iceberg impacts are to be resisted. For the structural designer, the starting point is specification of the design loads to be resisted by a given structure. Several deterministic algorithms that were considered during this investigation are outlined and reviewed. One of these approaches was selected to form the core of a stochastic computer program for iceberg impact loads. This paper summarises the procedure undertaken to select the deterministic iceberg impact load algorithm and the reasons for the selection that was made. Examples are given to illustrate the differences among the various methods. The platform used in the examples is that proposed for production of the Hibernia field located off the Canadian east coast.

• Supplemental Notes:
  • POAC 89; Port and Ocean Engineering under Arctic Conditions, 12-16 June, Luleaa, Sweden. OMAE 90, Proc of the v 1, Luleaa Univ Tech, Res Rpt TULEA 1989:08, v 1, p 546 [11 p, 4 ref, 5 fig]
• Authors:
  • Johnson, R C
  • Prodanovic, A
• Publication Date: 1989

Language

• English

Subject/Index Terms

• TRT Terms: Design; Icebergs; Mathematical models; Offshore structures; Set forward force
• Uncontrolled Terms: Design criteria
• Subject Areas: Bridges and other structures; Design; Marine Transportation;

Filing Info

• Accession Number: 00699543
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM